Device for preventing liquid from splashing during strip steel coating and passivation
Patent Information
- Application Number
- CN202522268310.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-27
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-10-27
AI Technical Summary
[0004]为克服上述缺陷，本实用新型的实施例提供了一种防甩液带钢涂敷钝化液装置，解决了现有技术中辊涂式钝化机容易造成钝化液飞溅的技术问题
本实用新型中，通过在涂料辊两端设置卸液部，使位于涂料辊和带料辊之间的钝化液能够从卸液部流下，避免了钝化液在涂料辊与带料辊两端积聚，从而有效地防止了钝化液的飞溅，改善了周围的工作环境，减少了钝化液的浪费。
Smart Images
Figure CN224832858U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of strip passivation liquid coating equipment, specifically to a device for applying passivation liquid to strips to prevent liquid spillage. Background Technology
[0002] After being leveled by a leveling machine, the strip steel usually needs to pass through a passivation device to have a passivation solution applied to it. After the passivation solution is applied, a chemical conversion film is formed on the surface of the strip steel. This chemical conversion film not only prevents the strip steel from being oxidized, but also reduces surface scratches during coiling and transportation, thus lowering the scrap rate.
[0003] In existing technologies, a roller-coating passivation machine is typically used, which includes a coating roller, a strip roller, a spray pipe, a tray, a circulation box, a supply pipe, and a return pipe. The coating roller is positioned on both sides of the strip's running path, and the strip roller is tangentially positioned outside the coating roller. A spray pipe is located above the strip roller, and a tray is located below it. A circulation box is located below the tray, and a supply pipe connects the circulation box to the spray pipe. A return pipe connects the tray and the circulation box. In actual operation, the strip roller carries the passivation liquid sprayed from the spray pipe to the area between the coating roller and the strip roller, allowing the passivation liquid to contact the coating roller and carrying some of it to the strip, thus achieving the purpose of coating the strip with passivation liquid. However, the passivation liquid cannot fall directly into the material tray below between the paint roller and the conveyor roller. It can only flow down from both ends of the paint roller and the conveyor roller. After the passivation liquid reaches both ends of the paint roller and the conveyor roller, the high-speed rotation of the paint roller and the conveyor roller will cause the passivation liquid to splash, which not only affects the surrounding working environment, but also wastes the passivation liquid. Utility Model Content
[0004] To overcome the above-mentioned defects, the present invention provides a device for applying passivation liquid to steel strips to prevent liquid splashing, which solves the technical problem that the existing roller coating passivation machine is prone to causing passivation liquid splashing.
[0005] According to one aspect, at least one embodiment of the present invention provides a device for applying passivation liquid to anti-splashing strip steel, comprising: The frame is equipped with two coating components, which are respectively used to apply passivation liquid to both sides of the strip steel; The coating assembly includes a strip roller, a coating roller, and a spray pipe. Both the strip roller and the coating roller are rotatably mounted on the frame. The strip roller and the coating roller rotate in opposite directions, and the outer wall of the strip roller is tangential to the outer wall of the coating roller. The spray pipe is mounted on the frame and can spray passivation liquid between the strip roller and the coating roller. The strip roller can carry the passivation liquid to the coating roller, so that the coating roller contacts the strip steel by rotating and applies the passivation liquid to the surface of the strip steel. The coating roller is provided with unloading sections at both ends. The outer wall of the unloading section does not abut against the outer wall of the conveyor roller, so that the passivation liquid located between the coating roller and the conveyor roller can flow down from the unloading section.
[0006] For example, in at least one embodiment of the present invention, a device for applying passivating liquid to anti-splashing strip steel is provided, wherein the unloading part is trough-shaped, the unloading part is located on the peripheral wall of the coating roller, and the unloading part penetrates through the end of the coating roller; For example, in at least one embodiment of the present invention, a device for applying passivating liquid to anti-splashing strip steel is provided, wherein the length of the coating roller is less than the length of the strip roller, and the outer walls at both ends of the strip roller have portions that do not abut against the outer walls of the strip roller, so that the ends of the coating roller form the unloading portion.
[0007] For example, in at least one embodiment of this utility model, a device for applying passivating liquid to anti-spinning strips further includes: A liquid collection tank is provided on the frame and located below the coating assembly. The liquid collection tank is used to collect the passivation liquid left between the coating roller and the conveyor roller.
[0008] For example, in at least one embodiment of this utility model, a device for applying passivating liquid to anti-spinning strip steel includes a coating roller comprising: The roller core is rotatably mounted on the frame. A rubber sleeve is fitted onto the outer peripheral wall of the roller core, and the liquid discharge section is provided at both ends of the rubber sleeve.
[0009] For example, in at least one embodiment of the present invention, a device for applying passivating liquid to anti-splashing strip steel is provided, wherein the axial width of the unloading part is 0.09~0.1R, and the radial depth of the unloading part is 0.09~0.1R, where R is the diameter of the coating roller.
[0010] For example, in at least one embodiment of the present invention, a device for applying passivating liquid to anti-splashing strip steel is provided, wherein the axial width of the unloading section is 0.1~0.11R.
[0011] For example, in at least one embodiment of this utility model, a device for applying passivating liquid to anti-spinning strips further includes: A sliding seat is slidably mounted on the frame, and the conveyor roller is rotatably mounted on the sliding seat so that the conveyor roller can move closer to or away from the paint roller under the drive of the sliding seat.
[0012] For example, in at least one embodiment of the present invention, a device for applying passivating liquid to anti-spinning strip steel further includes a driving assembly. The driving assembly is used to drive the sliding seat to slide closer to or away from the coating roller. The driving assembly includes: A worm gear reducer is mounted on the frame, and the worm gear reducer has an output end; A lead screw is provided at the output end, and the lead screw is threadedly connected to the sliding seat so that the lead screw can drive the sliding seat to slide by rotation.
[0013] For example, in at least one embodiment of this utility model, a device for applying passivating liquid to anti-spinning strips further includes: A handwheel is located at the input end of the worm gear reducer so that the handwheel can drive the lead screw to rotate.
[0014] The beneficial effects of this utility model are as follows: In this invention, by providing discharge sections at both ends of the coating roller, the passivation liquid located between the coating roller and the conveyor roller can flow down from the discharge sections, thus preventing the passivation liquid from accumulating at both ends of the coating roller and the conveyor roller, effectively preventing splashing of the passivation liquid, improving the surrounding working environment, and reducing the waste of passivation liquid. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.
[0016] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model; Figure 2 for Figure 1 Side view of the structure in the embodiment; Figure 3 This is a schematic diagram of the structure of the conveyor roller and the coating roller in Embodiment 3 of this utility model; Figure 4 This is a schematic diagram of the structure of the coating roller in Embodiment 2 of this utility model; In the diagram: 100, frame; 200, coating assembly; 210, conveyor roller; 220, paint roller; 230, spray pipe; 221, unloading section; 240, collection tank; 222, roller core; 223, rubber sleeve; 300, sliding seat; 400, worm gear reducer; 500, lead screw; 600, handwheel. Detailed Implementation
[0017] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.
[0018] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."
[0019] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0020] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0021] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0022] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0023] Example 1 like Figures 1-4As shown, this invention illustrates a device for applying passivating liquid to anti-splash strip steel according to an embodiment of the present invention. The device includes a frame 100 and coating components 200. The frame 100 is a general frame structure with multiple support legs at its bottom, which are fixed to the ground with anchor bolts to enhance the stability of the device and prevent shaking during operation. There are two coating components 200. The strip steel passes through the two coating components 200 sequentially, and the two coating components 200 are arranged alternately vertically. The two coating components 200 apply passivating liquid to two sides of the strip steel, respectively. Specifically, the coating components 200 include a strip roller 210, a paint roller 220, and a spray pipe 230. The two ends of the strip roller 210 are mounted on the mounting bracket of the frame 100 via bearing seats to ensure smooth rotation. The two ends of the paint roller 220 are also mounted on the mounting bracket of the frame 100 via bearing seats, in the same manner as the strip roller 210. The coating roller 220 rotates in the opposite direction to the conveyor roller 210, and their outer walls are tangent to ensure effective transfer of the passivation liquid. The conveyor roller 210 and the coating roller 220 can be driven by two independent motors, or a single motor can drive either the conveyor roller 210 or the coating roller 220 to rotate. Then, through gear meshing between the conveyor roller 210 and the coating roller 220, the reverse rotation between the conveyor roller 210 and the coating roller 220 can be achieved.
[0024] The spray pipe 230 is a tubular structure, mounted on the frame 100, and located above the conveyor roller 210. The axis of the spray pipe 230 is parallel to the axis of the conveyor roller 210. The spray pipe 230 is connected to an external passivation liquid storage tank, and a pump can pump the passivation liquid from the storage tank into the spray pipe 230. The spray pipe 230 can be located directly above the conveyor roller 210, directly above the area between the conveyor roller 210 and the paint roller 220, or directly above the conveyor roller 210. Several nozzles are evenly distributed along the axial direction on the spray pipe 230 so that the passivation liquid can be sprayed out from the nozzles. Preferably, regardless of the location of the spray pipe 230, the passivation liquid sprayed from the nozzles should fall above the conveyor roller 210 and near the paint roller 220, so that the conveyor roller 210 can carry the passivation liquid between the paint roller 220 and the conveyor roller 210.
[0025] The unloading section 221 is located at both ends of the paint roller 220. The unloading section 221 can be integrally formed from the paint roller 220, or it can be achieved by welding or bolting external structural components. Regardless of the method, the unloading section 221 does not contact the outer wall of the conveying roller 210, allowing the passivation liquid located between the paint roller 220 and the conveying roller 210 to flow down from the unloading section 221. The function of the unloading section 221 is to guide the passivation liquid down along the unloading section 221, preventing the passivation liquid from accumulating at the end of the unloading section 221, thereby reducing splashing of the passivation liquid.
[0026] Working Principle: After being leveled by the leveling machine, the strip steel is conveyed to the inlet of the passivation liquid coating device via a conveying device. The strip steel sequentially passes through two coating components 200. The valve of the spray pipe 230 is activated, and the passivation liquid is evenly sprayed between the strip roller 210 and the coating roller 220 through the nozzle. Driven by a motor, the strip roller 210 rotates, carrying the passivation liquid sprayed from the spray pipe 230 to a position tangential to the coating roller 220. Because the strip roller 210 and the coating roller 220 rotate in opposite directions and their outer walls are tangential, the passivation liquid is transferred to the surface of the coating roller 220. During the rotation of the coating roller 220, the passivation liquid carried on its surface comes into contact with the strip steel, and the rotation of the coating roller 220 coats the surface of the strip steel with the passivation liquid. Simultaneously, the two coating components 200 coat both sides of the strip steel respectively, ensuring that both sides of the strip steel are evenly covered with passivation liquid. During the rotation of the paint roller 220, the passivation liquid located between the paint roller 220 and the conveyor roller 210 can flow down from the discharge section 221 due to the presence of the discharge section 221, thus preventing the passivation liquid from accumulating and splashing at the end, thereby reducing the waste of passivation liquid and keeping the working environment clean.
[0027] By providing discharge sections 221 at both ends of the coating roller 220, the passivation liquid located between the coating roller 220 and the conveyor roller 210 can flow down from the discharge sections 221, thus preventing the passivation liquid from accumulating at both ends of the coating roller 220 and the conveyor roller 210. This effectively prevents the splashing of the passivation liquid, improves the surrounding working environment, and reduces the waste of passivation liquid.
[0028] Example 2 Based on Example 1, see Figure 1 , Figure 4 The unloading section 221 is a trough-shaped structure located on the peripheral wall of the paint roller 220 and extending through the end of the paint roller 220. The shape of the unloading section 221 can be annular, and the bottom of the unloading section 221 is flat. Optionally, the bottom of the unloading section 221 is inclined, with an inclination angle of 10°-15°, sloping from the peripheral wall of the paint roller 220 towards the end.
[0029] Specifically, since the outer walls of the conveyor roller 210 and the coating roller 220 are in contact with each other, the passivation liquid cannot fall between the conveyor roller 210 and the coating roller 220. As the passivation liquid accumulates, it will flow to both ends and eventually fall from the discharge section 221 along the outer wall of the conveyor roller 210, thereby avoiding the accumulation of passivation liquid at both ends between the coating roller 220 and the conveyor roller 210 and the splashing of passivation liquid caused by the relative rotation of the coating roller 220 and the conveyor roller 210.
[0030] Furthermore, the axial width of the unloading section 221 is 0.09~0.1R, and the radial depth of the unloading section 221 is 0.09~0.1R, where R is the diameter of the coating roller 220. Using a suitable size for the unloading section 221 ensures sufficient space to accommodate the passivation liquid flowing from between the coating roller 220 and the feed roller 210, without compromising the overall structure and coating function of the coating roller 220 due to excessive size.
[0031] Example 3 Based on Example 1, the difference from Example 2 is that, referring to Figure 3 The length of the paint roller 220 is less than the length of the feed roller 210. The outer walls at both ends of the feed roller 210 have portions that do not abut against the outer wall of the paint roller 220, thereby naturally forming a discharge section 221 at the end of the paint roller 220.
[0032] Furthermore, the axial width of the unloading section 221 is 0.1~0.11R, where R is the diameter of the coating roller 220. Using an appropriately sized unloading section 221 ensures that there is enough space to accommodate the passivation liquid flowing out from between the coating roller 220 and the conveying roller 210, without affecting the overall structure and coating function of the coating roller 220 due to excessive size.
[0033] refer to Figure 1 and Figure 2 In some embodiments, based on Embodiment 1, Embodiment 2, or Embodiment 3, a passivation liquid device for anti-splashing strip coating further includes a collection tank 240. The collection tank 240 is fixed to the frame 100 by welding or bolting, and is located below the coating assembly 200. The collection tank 240 is a trough-shaped structure with an open top, allowing passivation liquid left between the strip roller 210 and the coating roller 220 to fall into the collection tank 240. The number of collection tanks 240 can be one or two. When there is one collection tank 240, it should be able to cover the bottom area of both coating assemblies 200. If there are two collection tanks 240, each is located below one of the two coating assemblies 200, and each collection tank 240 is used to collect the passivation liquid falling from the two coating assemblies 200.
[0034] Optionally, the collection tank 240 is provided with a drain outlet, which can be located at the bottom of the collection tank 240, allowing the passivating solution to flow out from the bottom of the collection tank 240. A filter device is added at the drain outlet to filter out solid impurities in the passivating solution. After the passivating solution is filtered, it can be passed into a passivating solution storage tank, allowing the passivating solution to be reused and further reducing waste.
[0035] Furthermore, the coating roller 220 includes a roller core 222 and a rubber sleeve 223. The roller core 222 is made of hard metal to prevent deformation of the central part of the roller core 222 due to excessive axial length. The roller core 222 has a main body and a connecting part. The connecting part is connected to both ends of the main body. The diameter of the main body is larger than the diameter of the connecting part. The connecting part is rotatably mounted on the frame 100 via a bearing seat. The part of the connecting part that extends out of the bearing seat can be connected to the drive device through a transmission assembly. The specific transmission assembly can be a chain and sprocket structure, a belt and pulley structure, or a gear meshing structure.
[0036] The rubber sleeve 223 is made of a soft material, optionally nitrile rubber or polyurethane rubber. Adding a rubber sleeve 223 to the outside of the roller core 222 allows the rubber sleeve 223 to contact the strip roller 210 and the strip steel. On the one hand, the deformation of the rubber sleeve 223 itself can make the strip roller 210 and the coating roller 220 fit more tightly. On the other hand, the contact between the rubber sleeve 223 and the strip steel can prevent scratching the strip steel. The process of integrally molding the unloading part 221 with the rubber sleeve 223 gives the rubber sleeve 223 unloading parts 221 at both ends.
[0037] Furthermore, the anti-splashing strip steel coating passivation liquid device also includes a sliding seat 300. Two parallel linear guide rails are installed on the frame 100, and the guide rails are fixed to the frame 100 by bolts. A slider is installed at the bottom of the sliding seat 300 corresponding to the position of the guide rails. The slider cooperates with the guide rails to realize the sliding of the sliding seat 300 on the frame 100. The sliding seat 300 is provided with a bearing seat for the material roller 210. The sliding seat 300 drives the material roller 210 to move closer to or away from the coating roller 220, which can flexibly adjust the distance between the two. In actual production, this facilitates the disassembly and assembly of the coating roller 220, and allows for adjustment of the pressure between the coating roller 220 and the material roller 210 as needed.
[0038] The sliding seat 300 slides on the frame 100 driven by a drive assembly. The drive assembly can be an electric push rod, a cylinder, or a lead screw and nut mechanism, etc. Preferably, the drive assembly includes a worm gear reducer 400 and a lead screw 500. The lead screw 500 is connected to the output end of the worm gear reducer 400 by a key, so that the worm gear reducer can drive the lead screw 500 to rotate through an external drive. The lead screw 500 is connected to the sliding seat 300 by a threaded connection.
[0039] The worm gear reducer and lead screw 500 prevent the sliding seat 300 from moving due to force, thus ensuring stability during the application of the passivation liquid.
[0040] The worm gear reducer can be driven by a motor. Preferably, a handwheel 600 is installed at the input end of the worm gear reducer, allowing the operator to manually drive the worm gear reducer to rotate, thereby enabling the sliding seat 300 to move and adjust the position of the conveyor roller 210. Driving the reducer via the handwheel 600 can reduce the overall cost of the device.
[0041] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A device for applying passivating liquid to anti-splashing steel strips, characterized in that, include: The frame (100) is provided with two coating components (200), which are respectively used to apply passivation liquid to both sides of the strip steel; The coating assembly (200) includes a strip roller (210), a coating roller (220), and a spray pipe (230). The strip roller (210) and the coating roller (220) are both rotatably mounted on the frame (100). The rotation directions of the strip roller (210) and the coating roller (220) are opposite, and the outer wall of the strip roller (210) is tangent to the outer wall of the coating roller (220). The spray pipe (230) is mounted on the frame (100) and can spray passivation liquid between the strip roller (210) and the coating roller (220). The strip roller (210) can carry the passivation liquid to the coating roller (220) so that the coating roller (220) contacts the strip steel by rotating and applies the passivation liquid to the surface of the strip steel. The coating roller (220) has unloading sections (221) at both ends. The outer wall of the unloading section (221) does not abut against the outer wall of the conveyor roller (210) so that the passivation liquid located between the coating roller (220) and the conveyor roller (210) can flow down from the unloading section (221).
2. The device for applying passivating liquid to anti-splashing strip steel according to claim 1, characterized in that, The unloading section (221) is trough-shaped and is located on the peripheral wall of the paint roller (220), and the unloading section (221) extends through the end of the paint roller (220).
3. The device for applying passivating liquid to anti-splashing strip steel according to claim 1, characterized in that, The length of the coating roller (220) is less than the length of the conveyor roller (210), and the outer walls at both ends of the conveyor roller (210) have portions that do not abut against the outer wall of the conveyor roller (210), so that the end of the coating roller (220) forms the unloading portion (221).
4. The device for applying passivating liquid to anti-splashing strip steel according to claim 1, characterized in that, Also includes: A collection tank (240) is provided on the frame (100) and is located below the coating assembly (200). The collection tank (240) is used to collect the passivation liquid left between the coating roller (220) and the conveyor roller (210).
5. The device for applying passivating liquid to anti-splashing strip steel according to claim 1, characterized in that, The coating roller (220) includes: The roller core (222) is rotatably mounted on the frame (100); A rubber sleeve (223) is fitted on the outer peripheral wall of the roller core (222), and the two ends of the rubber sleeve (223) are provided with the liquid discharge part (221).
6. The device for applying passivating liquid to anti-splashing strip steel according to claim 2, characterized in that, The axial width of the unloading section (221) is 0.09~0.1R, and the radial depth of the unloading section (221) is 0.09~0.1R, where R is the diameter of the coating roller (220).
7. The device for applying passivating liquid to anti-splashing strip steel according to claim 3, characterized in that, The axial width of the unloading section (221) is 0.1~0.11R, where R is the diameter of the coating roller (220).
8. The device for applying passivating liquid to anti-splashing strip steel according to claim 1, characterized in that, Also includes: A sliding seat (300) is slidably disposed on the frame (100), and the material roller (210) is rotatably disposed on the sliding seat (300) so that the material roller (210) can move closer to or away from the paint roller (220) under the drive of the sliding seat (300).
9. The device for applying passivating liquid to anti-splashing strip steel according to claim 8, characterized in that, It also includes a drive assembly for driving the slide block (300) to slide closer to or away from the paint roller (220), the drive assembly comprising: A worm gear reducer (400) is mounted on the frame (100) and has an output end; A lead screw (500) is provided at the output end. The lead screw (500) is threadedly connected to the sliding seat (300) so that the lead screw (500) can drive the sliding seat (300) to slide by rotation.
10. The device for applying passivating liquid to anti-splashing strip steel according to claim 9, characterized in that, Also includes: A handwheel (600) is provided at the input end of the worm gear reducer (400) so that the handwheel (600) can drive the lead screw (500) to rotate.